SIP32419 Datasheet, PDF (1/14 Pages) Vishay Siliconix – 28 V, 56 m, Load Switch with Programmable Current Limit and Slew Rate Control

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SiP32419, SiP32429
Vishay Siliconix
28 V, 56 m, Load Switch
with Programmable Current Limit and Slew Rate Control
OPERATION DESCRIPTION
SiP32419 and SiP32429 are load switches that integrate
multiple control features that simplify the design and
increase the reliability of the circuitry connected to the
switch. Both devices are 56 m switches designed to
operate in the 6 V to 28 V range. An internally generated gate
drive voltage ensures good R_ON linearity over the input
voltage operating range.
The SiP32419 and SiP32429 have a slew rate control circuit
that controls the switch turn-on time to the value set by an
external capacitor.
After soft start, an over-current protection circuit (OCP)
continuously monitors the current through the load switch,
and controls the switch impedance to limit the current to the
level programmed by an external resistor. If the over-current
condition persists for more than 7 ms, the switch shuts off
automatically. The SiP32419 and SiP32429 has an over
temperature protection circuit (OTP) which will shut the
switch off if the junction temperature exceeds about 135 °C.
The OTP circuit will release the switch when the temperature
has decreased by about 40 °C of hysteresis.
When an OCP or an OTP fault condition is detected the FLG
pin is pulled low. For the SiP32429, the fault flag will release
150 ms after the fault condition is cleared, and the switch
will automatically turn on at the programmed slew rate. For
the SiP32419, the switch will remain off and the fault flag will
remain on. The switch will be reset by toggling either control
signal on EN pin or the input power if it is not under over
temperature fault condition.
These devices feature a low voltage control logic interface
which can be controlled without the need for level shifting.
These devices also include a power good flag.
SiP32419 and SiP32429 are available in a space efficient
DFN10 3 mm x 3 mm package.
TYPICAL APPLICATION CIRCUIT
FEATURES
• 6 V to 28 V operation
• Programmable soft start
• Programmable current limit
• Over temperature protection
• ON resistance 56 m
Available
• Power good, when V_OUT reaches 90 % of V_IN
• Fault flag
• Under voltage lockout: 4.8 V / 5.4 V (typ. / max.)
• Package: DFN10 3 mm x 3 mm
• SiP32429 will turn OFF the switch under fault conditions,
and re-try to turn on through the full soft start procedure
150 ms after the switch is off if there is no OT fault.
• SiP32419 will turn OFF the switch under fault conditions
and remain OFF. The switch can be reset by toggling
either signal on EN pin or the input power if it is not under
over temperature fault condition.
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Personal computers
• Lighting
• Flat panel displays
• Game consoles
• Industrial
• Network communication
• Data storage
Fig. 1 - SiP32419, SiP32429 Typical Application Circuit
S16-2135-Rev. E, 24-Oct-16
1
Document Number: 63939
For technical questions, contact: [e-mail]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000